object-c - 排序_real小辉侠

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object-c - 排序

(2014-02-17 10:59:04)

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分类： Mac/IOS那些事

排序

数字排序

_array = [[NSMutableArray

alloc]

initWithObjects:@"4",

@"1",

@"10",

@"2",

nil];

_array = [[NSMutableArray

alloc]

initWithArray:[_array

sortedArrayUsingComparator:^NSComparisonResult(id

obj1,

id 
obj2)
{

        return

[obj1

compare:obj2

options:NSNumericSearch];

    }]];

升序   字母

_array = [[NSMutableArray

alloc]

initWithArray:[_array

sortedArrayUsingSelector:@selector(compare:)]];

//

_allKeys = [[NSMutableArray

alloc]initWithArray:[self.dict

allKeys]];

    //升序排序

    _allKeys
= [[NSMutableArray

alloc]initWithArray:[_allKeys

sortedArrayUsingSelector:@selector(compare:)]];

    _allKeys
= [[NSMutableArray

alloc]initWithArray:[_allKeys

sortedArrayUsingComparator:^NSComparisonResult(id

obj1,

id 
obj2)
{

        return

[obj1

compare:obj2

options:NSNumericSearch]
== 
NSOrderedAscending;

    }]];

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